Method and apparatus for performing bwp-based communication in nr v2x

ABSTRACT

Provided herein are a method for performing wireless communication by a first apparatus and an apparatus for supporting the same. The method may include the steps of receiving a configuration related to a Uu bandwidth part (BWP) from a base station, and receiving a configuration related to a sidelink (SL) BWP from the base station. Herein, based on a numerology of the Uu BWP and a numerology of the SL BWP being different, the first apparatus may not perform SL communication on the SL BWP.

CROSS-REFERENCE TO RELATED APPLICATIONS

Pursuant to 35 U.S.C. § 119(e), this application is a continuation ofInternational Application PCT/KR2020/000474, with an internationalfiling date of Jan. 10, 2020, which claims the benefit of U.S.Provisional Applications No. 62/791,638 filed on Jan. 11, 2019, No.62/794,719 filed on Jan. 21, 2019, the contents of which are all herebyincorporated by reference herein in their entirety.

BACKGROUND OF THE DISCLOSURE Field of the Disclosure

This disclosure relates to a wireless communication system.

Related Art

Sidelink (SL) communication is a communication scheme in which a directlink is established between User Equipments (UEs) and the UEs exchangevoice and data directly with each other without intervention of anevolved Node B (eNB). SL communication is under consideration as asolution to the overhead of an eNB caused by rapidly increasing datatraffic.

Vehicle-to-everything (V2X) refers to a communication technology throughwhich a vehicle exchanges information with another vehicle, apedestrian, an object having an infrastructure (or infra) establishedtherein, and so on. The V2X may be divided into 4 types, such asvehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I),vehicle-to-network (V2N), and vehicle-to-pedestrian (V2P). The V2Xcommunication may be provided via a PC5 interface and/or Uu interface.

Meanwhile, as a wider range of communication devices require largercommunication capacities, the need for mobile broadband communicationthat is more enhanced than the existing Radio Access Technology (RAT) isrising. Accordingly, discussions are made on services and user equipment(UE) that are sensitive to reliability and latency. And, a nextgeneration radio access technology that is based on the enhanced mobilebroadband communication, massive Machine Type Communication (MTC),Ultra-Reliable and Low Latency Communication (URLLC), and so on, may bereferred to as a new radio access technology (RAT) or new radio (NR).Herein, the NR may also support vehicle-to-everything (V2X)communication.

FIG. 1 is a drawing for describing V2X communication based on NR,compared to V2X communication based on RAT used before NR. Theembodiment of FIG. 1 may be combined with various embodiments of thepresent disclosure.

Regarding V2X communication, a scheme of providing a safety service,based on a V2X message such as BSM(Basic Safety Message),CAM(Cooperative Awareness Message), and DENM(Decentralized EnvironmentalNotification Message) is focused in the discussion on the RAT usedbefore the NR. The V2X message may include position information, dynamicinformation, attribute information, or the like. For example, a UE maytransmit a periodic message type CAM and/or an event triggered messagetype DENM to another UE.

For example, the CAM may include dynamic state information of thevehicle such as direction and speed, static data of the vehicle such asa size, and basic vehicle information such as an exterior illuminationstate, route details, or the like. For example, the UE may broadcast theCAM, and latency of the CAM may be less than 100 ms. For example, the UEmay generate the DENM and transmit it to another UE in an unexpectedsituation such as a vehicle breakdown, accident, or the like. Forexample, all vehicles within a transmission range of the UE may receivethe CAM and/or the DENM. In this case, the DENM may have a higherpriority than the CAM.

Thereafter, regarding V2X communication, various V2X scenarios areproposed in NR. For example, the various V2X scenarios may includevehicle platooning, advanced driving, extended sensors, remote driving,or the like.

For example, based on the vehicle platooning, vehicles may move togetherby dynamically forming a group. For example, in order to perform platoonoperations based on the vehicle platooning, the vehicles belonging tothe group may receive periodic data from a leading vehicle. For example,the vehicles belonging to the group may decrease or increase an intervalbetween the vehicles by using the periodic data.

For example, based on the advanced driving, the vehicle may besemi-automated or fully automated. For example, each vehicle may adjusttrajectories or maneuvers, based on data obtained from a local sensor ofa proximity vehicle and/or a proximity logical entity. In addition, forexample, each vehicle may share driving intention with proximityvehicles.

For example, based on the extended sensors, raw data, processed data, orlive video data obtained through the local sensors may be exchangedbetween a vehicle, a logical entity, a UE of pedestrians, and/or a V2Xapplication server. Therefore, for example, the vehicle may recognize amore improved environment than an environment in which a self-sensor isused for detection.

For example, based on the remote driving, for a person who cannot driveor a remote vehicle in a dangerous environment, a remote driver or a V2Xapplication may operate or control the remote vehicle. For example, if aroute is predictable such as public transportation, cloud computingbased driving may be used for the operation or control of the remotevehicle. In addition, for example, an access for a cloud-based back-endservice platform may be considered for the remote driving.

Meanwhile, a scheme of specifying service requirements for various V2Xscenarios such as vehicle platooning, advanced driving, extendedsensors, remote driving, or the like is discussed in NR-based V2Xcommunication.

SUMMARY OF THE DISCLOSURE Technical Objects

Meanwhile, a bandwidth part (BWP) may be defined for various purposes ina communication system, for example, a purpose of supporting a userequipment (UE) operating by an RF bandwidth smaller than a carrierbandwidth, a power saving purpose of a UE that does not need to processa whole carrier/system bandwidth for transception, or a load balancingpurpose within a component carrier, and so on. In such an environment, aUE performing sidelink (SL) communication may also be operated based ona BWP, and, according to a configuration of the BWP, the UE may performswitching between different BWPs. Accordingly, a method for minimizinginfluence caused by such latency (or delay) time to the SL communicationand/or Uu communication needs to be considered. Additionally, anoperation method for communication between UE having different BWPconfigurations also needs to be considered.

For example, in case a BWP is defined in a Uu link based communicationand an SL based communication, depending upon the configurations of acenter frequency, a bandwidth, a numerology, and/or related RRCparameters of each BWP, when performing switching between the BWPs ofthe UEs, a latency (or delay) time may be generated. Therefore, in acommunication between UEs via SL operating based on a BWP, or in acommunication between a UE and a base station via Uu link, a method forminimizing influence, caused by a latency (or delay) time, and so on,according to BWP switching, on an SL communication and/or a Uucommunication, and an apparatus supporting the same need to be proposed.

Technical Solutions

According to an embodiment, provided herein is a method for performingwireless communication by a first apparatus. The method may include thesteps of receiving a configuration related to a Uu bandwidth part (BWP)from a base station, and receiving a configuration related to a sidelink(SL) BWP from the base station. Herein, based on a numerology of the UuBWP and a numerology of the SL BWP being different, the first apparatusmay not perform SL communication on the SL BWP.

According to an embodiment, provided herein is a first apparatus forperforming wireless communication. The first apparatus may include oneor more memories storing instructions, one or more transceivers, and oneor more processors connected to the one or more memories and the one ormore transceivers. The one or more processors may execute theinstructions to receive a configuration related to a Uu bandwidth part(BWP) from a base station, and to receive a configuration related to asidelink (SL) BWP from the base station. Herein, based on a numerologyof the Uu BWP and a numerology of the SL BWP being different, the firstapparatus may not perform SL communication on the SL BWP.

Effects of the Disclosure

The user equipment (UE) may efficiently perform SL communication.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a drawing for describing V2X communication based on NR,compared to V2X communication based on RAT used before NR.

FIG. 2 shows a structure of an NR system, in accordance with anembodiment of the present disclosure.

FIG. 3 shows a functional division between an NG-RAN and a 5GC, inaccordance with an embodiment of the present disclosure.

FIGS. 4A and 4B show a radio protocol architecture, in accordance withan embodiment of the present disclosure.

FIG. 5 shows a structure of an NR system, in accordance with anembodiment of the present disclosure.

FIG. 6 shows a structure of a slot of an NR frame, in accordance with anembodiment of the present disclosure.

FIG. 7 shows an example of a BWP, in accordance with an embodiment ofthe present disclosure.

FIGS. 8A and 8B show a radio protocol architecture for a SLcommunication, in accordance with an embodiment of the presentdisclosure.

FIG. 9 shows a UE performing V2X or SL communication, in accordance withan embodiment of the present disclosure.

FIGS. 10A and 10B show a procedure of performing V2X or SL communicationby a UE based on a transmission mode, in accordance with an embodimentof the present disclosure.

FIGS. 11A, 11B and 11C show three cast types, in accordance with anembodiment of the present disclosure.

FIG. 12 shows a procedure for configuring an RF bandwidth, by a UE,according to an embodiment of the present disclosure.

FIG. 13 shows a method for performing wireless communication, by a firstdevice (or apparatus), according to an embodiment of the presentdisclosure.

FIG. 14 shows a method for performing wireless communication, by a firstdevice (or apparatus), according to an embodiment of the presentdisclosure.

FIG. 15 shows a communication system 1, in accordance with an embodimentof the present disclosure.

FIG. 16 shows wireless devices, in accordance with an embodiment of thepresent disclosure.

FIG. 17 shows a signal process circuit for a transmission signal, inaccordance with an embodiment of the present disclosure.

FIG. 18 shows a wireless device, in accordance with an embodiment of thepresent disclosure.

FIG. 19 shows a hand-held device, in accordance with an embodiment ofthe present disclosure.

FIG. 20 shows a car or an autonomous vehicle, in accordance with anembodiment of the present disclosure.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

In the present specification, “A or B” may mean “only A”, “only B” or“both A and B.” In other words, in the present specification, “A or B”may be interpreted as “A and/or B”. For example, in the presentspecification, “A, B, or C” may mean “only A”, “only B”, “only C”, or“any combination of A, B, C”.

A slash (/) or comma used in the present specification may mean“and/or”. For example, “A/B” may mean “A and/or B”. Accordingly, “A/B”may mean “only A”, “only B”, or “both A and B”. For example, “A, B, C”may mean “A, B, or C”.

In the present specification, “at least one of A and B” may mean “onlyA”, “only B”, or “both A and B”. In addition, in the presentspecification, the expression “at least one of A or B” or “at least oneof A and/or B” may be interpreted as “at least one of A and B”.

In addition, in the present specification, “at least one of A, B, and C”may mean “only A”, “only B”, “only C”, or “any combination of A, B, andC”. In addition, “at least one of A, B, or C” or “at least one of A, B,and/or C” may mean “at least one of A, B, and C”.

In addition, a parenthesis used in the present specification may mean“for example”. Specifically, when indicated as “control information(PDCCH)”, it may mean that “PDCCH” is proposed as an example of the“control information”. In other words, the “control information” of thepresent specification is not limited to “PDCCH”, and “PDDCH” may beproposed as an example of the “control information”. In addition, whenindicated as “control information (i.e., PDCCH)”, it may also mean that“PDCCH” is proposed as an example of the “control information”.

A technical feature described individually in one figure in the presentspecification may be individually implemented, or may be simultaneouslyimplemented.

The technology described below may be used in various wirelesscommunication systems such as code division multiple access (CDMA),frequency division multiple access (FDMA), time division multiple access(TDMA), orthogonal frequency division multiple access (OFDMA), singlecarrier frequency division multiple access (SC-FDMA), and so on. TheCDMA may be implemented with a radio technology, such as universalterrestrial radio access (UTRA) or CDMA-2000. The TDMA may beimplemented with a radio technology, such as global system for mobilecommunications (GSM)/general packet ratio service (GPRS)/enhanced datarate for GSM evolution (EDGE). The OFDMA may be implemented with a radiotechnology, such as institute of electrical and electronics engineers(IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, evolved UTRA(E-UTRA), and so on. IEEE 802.16m is an evolved version of IEEE 802.16eand provides backward compatibility with a system based on the IEEE802.16e. The UTRA is part of a universal mobile telecommunication system(UMTS). 3rd generation partnership project (3GPP) long term evolution(LTE) is part of an evolved UMTS (E-UMTS) using the E-UTRA. The 3GPP LTEuses the OFDMA in a downlink and uses the SC-FDMA in an uplink.LTE-advanced (LTE-A) is an evolution of the LTE.

5G NR is a successive technology of LTE-A corresponding to a newClean-slate type mobile communication system having the characteristicsof high performance, low latency, high availability, and so on. 5G NRmay use resources of all spectrum available for usage including lowfrequency bands of less than 1 GHz, middle frequency bands ranging from1 GHz to 10 GHz, high frequency (millimeter waves) of 24 GHz or more,and so on.

For clarity in the description, the following description will mostlyfocus on LTE-A or 5G NR. However, technical features according to anembodiment of the present disclosure will not be limited only to this.

FIG. 2 shows a structure of an NR system, in accordance with anembodiment of the present disclosure. The embodiment of FIG. 2 may becombined with various embodiments of the present disclosure.

Referring to FIG. 2, a next generation-radio access network (NG-RAN) mayinclude a BS 20 providing a UE 10 with a user plane and control planeprotocol termination. For example, the BS 20 may include a nextgeneration-Node B (gNB) and/or an evolved-NodeB (eNB). For example, theUE 10 may be fixed or mobile and may be referred to as other terms, suchas a mobile station (MS), a user terminal (UT), a subscriber station(SS), a mobile terminal (MT), wireless device, and so on. For example,the BS may be referred to as a fixed station which communicates with theUE 10 and may be referred to as other terms, such as a base transceiversystem (BTS), an access point (AP), and so on.

The embodiment of FIG. 2 exemplifies a case where only the gNB isincluded. The BSs 20 may be connected to one another via Xn interface.The BS 20 may be connected to one another via 5th generation (5G) corenetwork (5GC) and NG interface. More specifically, the BSs 20 may beconnected to an access and mobility management function (AMF) 30 viaNG-C interface, and may be connected to a user plane function (UPF) 30via NG-U interface.

FIG. 3 shows a functional division between an NG-RAN and a 5GC, inaccordance with an embodiment of the present disclosure.

Referring to FIG. 3, the gNB may provide functions, such as Inter CellRadio Resource Management (RRM), Radio Bearer (RB) control, ConnectionMobility Control, Radio Admission Control, Measurement Configuration &Provision, Dynamic Resource Allocation, and so on. An AMF may providefunctions, such as Non Access Stratum (NAS) security, idle statemobility processing, and so on. A UPF may provide functions, such asMobility Anchoring, Protocol Data Unit (PDU) processing, and so on. ASession Management Function (SMF) may provide functions, such as userequipment (UE) Internet Protocol (IP) address allocation, PDU sessioncontrol, and so on.

Layers of a radio interface protocol between the UE and the network canbe classified into a first layer (L1), a second layer (L2), and a thirdlayer (L3) based on the lower three layers of the open systeminterconnection (OSI) model that is well-known in the communicationsystem. Among them, a physical (PHY) layer belonging to the first layerprovides an information transfer service by using a physical channel,and a radio resource control (RRC) layer belonging to the third layerserves to control a radio resource between the UE and the network. Forthis, the RRC layer exchanges an RRC message between the UE and the BS.

FIGS. 4A and 4B show a radio protocol architecture, in accordance withan embodiment of the present disclosure. The embodiment of FIGS. 4A and4B may be combined with various embodiments of the present disclosure.Specifically, FIG. 4A shows a radio protocol architecture for a userplane, and FIG. 4B shows a radio protocol architecture for a controlplane. The user plane corresponds to a protocol stack for user datatransmission, and the control plane corresponds to a protocol stack forcontrol signal transmission.

Referring to FIG. 4A and FIG. 4B, a physical layer provides an upperlayer with an information transfer service through a physical channel.The physical layer is connected to a medium access control (MAC) layerwhich is an upper layer of the physical layer through a transportchannel. Data is transferred between the MAC layer and the physicallayer through the transport channel. The transport channel is classifiedaccording to how and with what characteristics data is transmittedthrough a radio interface.

Between different physical layers, i.e., a physical layer of atransmitter and a physical layer of a receiver, data are transferredthrough the physical channel. The physical channel is modulated using anorthogonal frequency division multiplexing (OFDM) scheme, and utilizestime and frequency as a radio resource.

The MAC layer provides services to a radio link control (RLC) layer,which is a higher layer of the MAC layer, via a logical channel. The MAClayer provides a function of mapping multiple logical channels tomultiple transport channels. The MAC layer also provides a function oflogical channel multiplexing by mapping multiple logical channels to asingle transport channel. The MAC layer provides data transfer servicesover logical channels.

The RLC layer performs concatenation, segmentation, and reassembly ofRadio Link Control Service Data Unit (RLC SDU). In order to ensurediverse quality of service (QoS) required by a radio bearer (RB), theRLC layer provides three types of operation modes, i.e., a transparentmode (TM), an unacknowledged mode (UM), and an acknowledged mode (AM).An AM RLC provides error correction through an automatic repeat request(ARQ).

A radio resource control (RRC) layer is defined only in the controlplane. The RRC layer serves to control the logical channel, thetransport channel, and the physical channel in association withconfiguration, reconfiguration and release of RBs. The RB is a logicalpath provided by the first layer (i.e., the physical layer or the PHYlayer) and the second layer (i.e., the MAC layer, the RLC layer, and thepacket data convergence protocol (PDCP) layer) for data delivery betweenthe UE and the network.

Functions of a packet data convergence protocol (PDCP) layer in the userplane include user data delivery, header compression, and ciphering.Functions of a PDCP layer in the control plane include control-planedata delivery and ciphering/integrity protection.

A service data adaptation protocol (SDAP) layer is defined only in auser plane. The SDAP layer performs mapping between a Quality of Service(QoS) flow and a data radio bearer (DRB) and QoS flow ID (QFI) markingin both DL and UL packets.

The configuration of the RB implies a process for specifying a radioprotocol layer and channel properties to provide a particular serviceand for determining respective detailed parameters and operations. TheRB can be classified into two types, i.e., a signaling RB (SRB) and adata RB (DRB). The SRB is used as a path for transmitting an RRC messagein the control plane. The DRB is used as a path for transmitting userdata in the user plane.

When an RRC connection is established between an RRC layer of the UE andan RRC layer of the E-UTRAN, the UE is in an RRC_CONNECTED state, and,otherwise, the UE may be in an RRC_IDLE state. In case of the NR, anRRC_INACTIVE state is additionally defined, and a UE being in theRRC_INACTIVE state may maintain its connection with a core networkwhereas its connection with the BS is released.

Data is transmitted from the network to the UE through a downlinktransport channel. Examples of the downlink transport channel include abroadcast channel (BCH) for transmitting system information and adownlink-shared channel (SCH) for transmitting user traffic or controlmessages. Traffic of downlink multicast or broadcast services or thecontrol messages can be transmitted on the downlink-SCH or an additionaldownlink multicast channel (MCH). Data is transmitted from the UE to thenetwork through an uplink transport channel. Examples of the uplinktransport channel include a random access channel (RACH) fortransmitting an initial control message and an uplink SCH fortransmitting user traffic or control messages.

Examples of logical channels belonging to a higher channel of thetransport channel and mapped onto the transport channels include abroadcast channel (BCCH), a paging control channel (PCCH), a commoncontrol channel (CCCH), a multicast control channel (MCCH), a multicasttraffic channel (MTCH), etc.

The physical channel includes several OFDM symbols in a time domain andseveral sub-carriers in a frequency domain. One sub-frame includes aplurality of OFDM symbols in the time domain. A resource block is a unitof resource allocation, and consists of a plurality of OFDM symbols anda plurality of sub-carriers. Further, each subframe may use specificsub-carriers of specific OFDM symbols (e.g., a first OFDM symbol) of acorresponding subframe for a physical downlink control channel (PDCCH),i.e., an L1/L2 control channel. A transmission time interval (TTI) is aunit time of subframe transmission.

FIG. 5 shows a structure of an NR system, in accordance with anembodiment of the present disclosure. The embodiment of FIG. 5 may becombined with various embodiments of the present disclosure.

Referring to FIG. 5, in the NR, a radio frame may be used for performinguplink and downlink transmission. A radio frame has a length of 10 msand may be defined to be configured of two half-frames (HFs). Ahalf-frame may include five 1 ms subframes (SFs). A subframe (SF) may bedivided into one or more slots, and the number of slots within asubframe may be determined in accordance with subcarrier spacing (SCS).Each slot may include 12 or 14 OFDM(A) symbols according to a cyclicprefix (CP).

In case of using a normal CP, each slot may include 14 symbols. In caseof using an extended CP, each slot may include 12 symbols. Herein, asymbol may include an OFDM symbol (or CP-OFDM symbol) and a SingleCarrier-FDMA (SC-FDMA) symbol (or Discrete Fourier Transform-spread-OFDM(DFT-s-OFDM) symbol).

Table 1 shown below represents an example of a number of symbols perslot (N^(slot) _(symb)), a number slots per frame (N^(frame,u) _(slot)),and a number of slots per subframe (N^(subframe,u) _(slot)) inaccordance with an SCS configuration (u), in a case where a normal CP isused.

TABLE 1 SCS (15*2^(u)) N^(slot) _(symb) N^(frame, u) _(slot)N^(subframe, u) _(slot) 15 KHz (u = 0) 14 10 1 30 KHz (u = 1) 14 20 2 60KHz (u = 2) 14 40 4 120 KHz (u = 3) 14 80 8 240 KHz (u = 4) 14 160 16

Table 2 shows an example of a number of symbols per slot, a number ofslots per frame, and a number of slots per subframe in accordance withthe SCS, in a case where an extended CP is used.

TABLE 2 SCS (15*2^(u)) N^(slot) _(symb) N^(frame, u) _(slot)N^(subframe, u) _(slot) 60 KHz (u = 2) 12 40 4

In an NR system, OFDM(A) numerologies (e.g., SCS, CP length, and so on)between multiple cells being integrate to one UE may be differentlyconfigured. Accordingly, a (absolute time) duration (or section) of atime resource (e.g., subframe, slot or TTI) (collectively referred to asa time unit (TU) for simplicity) being configured of the same number ofsymbols may be differently configured in the integrated cells.

In the NR, multiple numerologies or SCSs for supporting diverse 5Gservices may be supported. For example, in case an SCS is 15 kHz, a widearea of the conventional cellular bands may be supported, and, in casean SCS is 30 kHz/60 kHz a dense-urban, lower latency, wider carrierbandwidth may be supported. In case the SCS is 60 kHz or higher, abandwidth that is greater than 24.25 GHz may be used in order toovercome phase noise.

An NR frequency band may be defined as two different types of frequencyranges. The two different types of frequency ranges may be FR1 and FR2.The values of the frequency ranges may be changed (or varied), and, forexample, the two different types of frequency ranges may be as shownbelow in Table 3. Among the frequency ranges that are used in an NRsystem, FR1 may mean a “sub 6 GHz range”, and FR2 may mean an “above 6GHz range” and may also be referred to as a millimeter wave (mmW).

TABLE 3 Frequency Range Corresponding frequency designation rangeSubcarrier Spacing (SCS) FR1 450 MHz-6000 MHz 15, 30, 60 kHz FR2 24250MHz-52600 MHz  60, 120, 240 kHz

As described above, the values of the frequency ranges in the NR systemmay be changed (or varied). For example, as shown below in Table 4, FR1may include a band within a range of 410 MHz to 7125 MHz. Morespecifically, FR1 may include a frequency band of 6 GHz (or 5850, 5900,5925 MHz, and so on) and higher. For example, a frequency band of 6 GHz(or 5850, 5900, 5925 MHz, and so on) and higher being included in FR1mat include an unlicensed band. The unlicensed band may be used fordiverse purposes, e.g., the unlicensed band for vehicle-specificcommunication (e.g., automated driving).

TABLE 4 Frequency Range Corresponding frequency designation rangeSubcarrier Spacing (SCS) FR1 410 MHz-7125 MHz 15, 30, 60 kHz FR2 24250MHz-52600 MHz  60, 120, 240 kHz

FIG. 6 shows a structure of a slot of an NR frame, in accordance with anembodiment of the present disclosure.

Referring to FIG. 6, a slot includes a plurality of symbols in a timedomain. For example, in case of a normal CP, one slot may include 14symbols. However, in case of an extended CP, one slot may include 12symbols. Alternatively, in case of a normal CP, one slot may include 7symbols. However, in case of an extended CP, one slot may include 6symbols.

A carrier includes a plurality of subcarriers in a frequency domain. AResource Block (RB) may be defined as a plurality of consecutivesubcarriers (e.g., 12 subcarriers) in the frequency domain. A BandwidthPart (BWP) may be defined as a plurality of consecutive (Physical)Resource Blocks ((P)RBs) in the frequency domain, and the BWP maycorrespond to one numerology (e.g., SCS, CP length, and so on). Acarrier may include a maximum of N number BWPs (e.g., 5 BWPs). Datacommunication may be performed via an activated BWP. Each element may bereferred to as a Resource Element (RE) within a resource grid and onecomplex symbol may be mapped to each element.

Meanwhile, a radio interface between a UE and another UE or a radiointerface between the UE and a network may consist of an L1 layer, an L2layer, and an L3 layer. In various embodiments of the presentdisclosure, the L1 layer may imply a physical layer. In addition, forexample, the L2 layer may imply at least one of a MAC layer, an RLClayer, a PDCP layer, and an SDAP layer. In addition, for example, the L3layer may imply an RRC layer.

Hereinafter, a bandwidth part (BWP) and a carrier will be described.

The BWP may be a set of consecutive physical resource blocks (PRBs) in agiven numerology. The PRB may be selected from consecutive sub-sets ofcommon resource blocks (CRBs) for the given numerology on a givencarrier.

When using bandwidth adaptation (BA), a reception bandwidth andtransmission bandwidth of a UE are not necessarily as large as abandwidth of a cell, and the reception bandwidth and transmissionbandwidth of the BS may be adjusted. For example, a network/BS mayinform the UE of bandwidth adjustment. For example, the UE receiveinformation/configuration for bandwidth adjustment from the network/BS.In this case, the UE may perform bandwidth adjustment based on thereceived information/configuration. For example, the bandwidthadjustment may include an increase/decrease of the bandwidth, a positionchange of the bandwidth, or a change in subcarrier spacing of thebandwidth.

For example, the bandwidth may be decreased during a period in whichactivity is low to save power. For example, the position of thebandwidth may move in a frequency domain. For example, the position ofthe bandwidth may move in the frequency domain to increase schedulingflexibility. For example, the subcarrier spacing of the bandwidth may bechanged. For example, the subcarrier spacing of the bandwidth may bechanged to allow a different service. A subset of a total cell bandwidthof a cell may be called a bandwidth part (BWP). The BA may be performedwhen the BS/network configures the BWP to the UE and the BS/networkinforms the UE of the BWP currently in an active state among theconfigured BWPs.

For example, the BWP may be at least any one of an active BWP, aninitial BWP, and/or a default BWP. For example, the UE may not monitordownlink radio link quality in a DL BWP other than an active DL BWP on aprimary cell (PCell). For example, the UE may not receive PDCCH, PDSCH,or CSI-RS (excluding RRM) outside the active DL BWP. For example, the UEmay not trigger a channel state information (CSI) report for theinactive DL BWP. For example, the UE may not transmit PUCCH or PUSCHoutside an active UL BWP. For example, in a downlink case, the initialBWP may be given as a consecutive RB set for an RMSI CORESET (configuredby PBCH). For example, in an uplink case, the initial BWP may be givenby SIB for a random access procedure. For example, the default BWP maybe configured by a higher layer. For example, an initial value of thedefault BWP may be an initial DL BWP. For energy saving, if the UE failsto detect DCI during a specific period, the UE may switch the active BWPof the UE to the default BWP.

Meanwhile, the BWP may be defined for SL. The same SL BWP may be used intransmission and reception. For example, a transmitting UE may transmitan SL channel or an SL signal on a specific BWP, and a receiving UE mayreceive the SL channel or the SL signal on the specific BWP. In alicensed carrier, the SL BWP may be defined separately from a Uu BWP,and the SL BWP may have configuration signaling separate from the UuBWP. For example, the UE may receive a configuration for the SL BWP fromthe BS/network. The SL BWP may be (pre-)configured in a carrier withrespect to an out-of-coverage NR V2X UE and an RRC_IDLE UE. For the UEin the RRC_CONNECTED mode, at least one SL BWP may be activated in thecarrier.

FIG. 7 shows an example of a BWP, in accordance with an embodiment ofthe present disclosure. The embodiment of FIG. 7 may be combined withvarious embodiments of the present disclosure. It is assumed in theembodiment of FIG. 7 that the number of BWPs is 3.

Referring to FIG. 7, a common resource block (CRB) may be a carrierresource block numbered from one end of a carrier band to the other endthereof. In addition, the PRB may be a resource block numbered withineach BWP. A point A may indicate a common reference point for a resourceblock grid.

The BWP may be configured by a point A, an offset N^(start) _(BWP) fromthe point A, and a bandwidth N^(size) _(BWP). For example, the point Amay be an external reference point of a PRB of a carrier in which asubcarrier 0 of all numerologies (e.g., all numerologies supported by anetwork on that carrier) is aligned. For example, the offset may be aPRB interval between a lowest subcarrier and the point A in a givennumerology. For example, the bandwidth may be the number of PRBs in thegiven numerology.

Hereinafter, V2X or SL communication will be described.

FIGS. 8A and 8B show a radio protocol architecture for a SLcommunication, in accordance with an embodiment of the presentdisclosure. The embodiment of FIGS. 8A and 8B may be combined withvarious embodiments of the present disclosure. More specifically, FIG.8A shows a user plane protocol stack, and FIG. 8B shows a control planeprotocol stack.

Hereinafter, a sidelink synchronization signal (SLSS) andsynchronization information will be described.

The SLSS may include a primary sidelink synchronization signal (PSSS)and a secondary sidelink synchronization signal (SSSS), as anSL-specific sequence. The PSSS may be referred to as a sidelink primarysynchronization signal (S-PSS), and the SSSS may be referred to as asidelink secondary synchronization signal (S-SSS). For example,length-127 M-sequences may be used for the S-PSS, and length-127 goldsequences may be used for the S-SSS. For example, a UE may use the S-PSSfor initial signal detection and for synchronization acquisition. Forexample, the UE may use the S-PSS and the S-SSS for acquisition ofdetailed synchronization and for detection of a synchronization signalID.

A physical sidelink broadcast channel (PSBCH) may be a (broadcast)channel for transmitting default (system) information which must befirst known by the UE before SL signal transmission/reception. Forexample, the default information may be information related to SLSS, aduplex mode (DM), a time division duplex (TDD) uplink/downlink (UL/DL)configuration, information related to a resource pool, a type of anapplication related to the SLSS, a subframe offset, broadcastinformation, or the like. For example, for evaluation of PSBCHperformance, in NR V2X, a payload size of the PSBCH may be 56 bitsincluding 24-bit CRC.

The S-PSS, the S-SSS, and the PSBCH may be included in a block format(e.g., SL synchronization signal (SS)/PSBCH block, hereinafter,sidelink-synchronization signal block (S-SSB)) supporting periodicaltransmission. The S-SSB may have the same numerology (i.e., SCS and CPlength) as a physical sidelink control channel (PSCCH)/physical sidelinkshared channel (PSSCH) in a carrier, and a transmission bandwidth mayexist within a (pre-)configured sidelink (SL) BWP. For example, theS-SSB may have a bandwidth of 11 resource blocks (RBs). For example, thePSBCH may exist across 11 RBs. In addition, a frequency position of theS-SSB may be (pre-)configured. Accordingly, the UE does not have toperform hypothesis detection at frequency to discover the S-SSB in thecarrier.

FIG. 9 shows a UE performing V2X or SL communication, in accordance withan embodiment of the present disclosure. The embodiment of FIG. 9 may becombined with various embodiments of the present disclosure.

Referring to FIG. 9, in V2X or SL communication, the term ‘UE’ maygenerally imply a UE of a user. However, if a network equipment such asa BS transmits/receives a signal according to a communication schemebetween UEs, the BS may also be regarded as a sort of the UE. Forexample, a UE 1 may be a first apparatus 100, and a UE 2 may be a secondapparatus 200.

For example, the UE 1 may select a resource unit corresponding to aspecific resource in a resource pool which implies a set of series ofresources. In addition, the UE 1 may transmit an SL signal by using theresource unit. For example, a resource pool in which the UE 1 is capableof transmitting a signal may be configured to the UE 2 which is areceiving UE, and the signal of the UE 1 may be detected in the resourcepool.

Herein, if the UE 1 is within a connectivity range of the BS, the BS mayinform the UE 1 of the resource pool. Otherwise, if the UE 1 is out ofthe connectivity range of the BS, another UE may inform the UE 1 of theresource pool, or the UE 1 may use a pre-configured resource pool.

In general, the resource pool may be configured in unit of a pluralityof resources, and each UE may select a unit of one or a plurality ofresources to use it in SL signal transmission thereof.

Hereinafter, resource allocation in SL will be described.

FIGS. 10A and 10B show a procedure of performing V2X or SL communicationby a UE based on a transmission mode, in accordance with an embodimentof the present disclosure. The embodiment of FIGS. 10A and 10B may becombined with various embodiments of the present disclosure. In variousembodiments of the present disclosure, the transmission mode may becalled a mode or a resource allocation mode. Hereinafter, forconvenience of explanation, in LTE, the transmission mode may be calledan LTE transmission mode. In NR, the transmission mode may be called anNR resource allocation mode.

For example, FIG. 10A shows a UE operation related to an LTEtransmission mode 1 or an LTE transmission mode 3. Alternatively, forexample, FIG. 10A shows a UE operation related to an NR resourceallocation mode 1. For example, the LTE transmission mode 1 may beapplied to general SL communication, and the LTE transmission mode 3 maybe applied to V2X communication.

For example, FIG. 10B shows a UE operation related to an LTEtransmission mode 2 or an LTE transmission mode 4. Alternatively, forexample, FIG. 10B shows a UE operation related to an NR resourceallocation mode 2.

Referring to FIG. 10A, in the LTE transmission mode 1, the LTEtransmission mode 3, or the NR resource allocation mode 1, a BS mayschedule an SL resource to be used by the UE for SL transmission. Forexample, the BS may perform resource scheduling to a UE 1 through aPDCCH (more specifically, downlink control information (DCI)), and theUE 1 may perform V2X or SL communication with respect to a UE 2according to the resource scheduling. For example, the UE 1 may transmita sidelink control information (SCI) to the UE 2 through a physicalsidelink control channel (PSCCH), and thereafter transmit data based onthe SCI to the UE 2 through a physical sidelink shared channel (PSSCH).

Referring to FIG. 10B, in the LTE transmission mode 2, the LTEtransmission mode 4, or the NR resource allocation mode 2, the UE maydetermine an SL transmission resource within an SL resource configuredby a BS/network or a pre-configured SL resource. For example, theconfigured SL resource or the pre-configured SL resource may be aresource pool. For example, the UE may autonomously select or schedule aresource for SL transmission. For example, the UE may perform SLcommunication by autonomously selecting a resource within a configuredresource pool. For example, the UE may autonomously select a resourcewithin a selective window by performing a sensing and resource(re)selection procedure. For example, the sensing may be performed inunit of subchannels. In addition, the UE 1 which has autonomouslyselected the resource within the resource pool may transmit the SCI tothe UE 2 through a PSCCH, and thereafter may transmit data based on theSCI to the UE 2 through a PSSCH.

FIGS. 11A, 11B and 11C show three cast types, in accordance with anembodiment of the present disclosure. The embodiment of FIGS. 11A, 11Band 11C may be combined with various embodiments of the presentdisclosure. Specifically, FIG. 11A shows broadcast-type SLcommunication, FIG. 11B shows unicast type-SL communication, and FIG.11C shows groupcast-type SL communication. In case of the unicast-typeSL communication, a UE may perform one-to-one communication with respectto another UE. In case of the groupcast-type SL transmission, the UE mayperform SL communication with respect to one or more UEs in a group towhich the UE belongs. In various embodiments of the present disclosure,SL groupcast communication may be replaced with SL multicastcommunication, SL one-to-many communication, or the like.

Meanwhile, in a next generation system, various usage cases may besupported. For example, services for communication of self-drivingvehicles, smart cars or connected cars, and so on, may be considered.For such services, each vehicle may receive and send (or transmit)information as a user equipment capable of performing communication.And, depending upon the circumstances, each vehicle may select resourcesfor communication with the help (or assistance) of the base station orwithout any help (or assistance) of the base station and transmit andreceive messages to and from other UEs.

Meanwhile, in a V2X system, in case a UE performs SL communication basedon a BWP, the UE may perform switching between multiple BWPs. In thiscase, a latency (or delay) time may be generated due to the BWPswitching. Therefore, a UE operation and a method for perform anefficient BWP-based communication need to be proposed so that minimalinfluence can be caused, by the latency (or delay) time, to the SLcommunication can/or Uu communication.

In this specification, although the proposed details and/or embodimentsmay be considered as a proposed method, a combination of each proposeddetail and/or embodiment may also be considered as a new method.Additionally, it will be apparent that the proposed details shall not belimited only to the proposed embodiment of the present disclosure nor belimited only to a specific system. In case of all parameters, alloperations, the combination(s) of each parameter and/or operation, theapplication or non-application of the corresponding parameter(s) and/oroperation(s), and/or the application or non-application of thecombination of each parameter and/or operation, the base station maysignal (in advance) such combination(s) and/or application ornon-application to the UE via higher layer signaling and/or physicallayer signaling, or such combination(s) and/or application ornon-application may be pre-defined in the system. For example, thehigher layer signaling may be application layer signaling, L3 signaling,L2 signaling, and so on. For example, the physical layer signaling maybe L1 signaling. Additionally, each detail of the present disclosure maybe defined as each operation mode, and the base station may(pre-)configure one of the operation modes to the UE via higher layersignaling and/or physical layer signaling. The base station may enablethe UE to operate in accordance with the corresponding mode. In thisspecification, TTI may correspond to a unit of various lengths, such asa sub-slot/slot/subframe or a basic unit, which is a basic transportunit, and so on. In this specification, the UE may correspond to anapparatus of various forms, such as a vehicle, a pedestrian terminal (orUE), and so on. Additionally, in this specification, details related tothe operations of the UE, the base station and/or a road side unit (RSU)may not be limited only to each apparatus (or device) type and may alsobe applied to different types of apparatuses (or devices). For example,in this specification, the details that are described as the operationsof the base station may also be applied as the operations of the UE.

For example, in case the UE performs Uu communication and SLcommunication based on a BWP, at least one of a center frequency, abandwidth, a numerology, and/or an RRC parameter of the BWPs beingconfigured for the UE may be different. In this case, if the UE performsswitching between the BWPs, additional latency (or delay) time may begenerated. For simplicity in the description, a BWP through which the UEperforms SL communication may be referred to as SL BWP, and a BWPthrough which the UE performs uplink communication or downlinkcommunication with the base station may be referred to as a Uu BWP. Forexample, in case of a UE operating based on instructions of the basestation, in order to receive the instructions of the base station, theUE may attempt to receive downlink control information from the Uu BWP,and the UE may perform SL transmission in the SL BWP in accordance withthe instructions. During this process, the UE may be required to performswitching between the Uu BWP and the SL BWP. In this case, in case atleast one of a center frequency, a bandwidth, a numerology, and/or anRRC parameter is differently configured between the Uu BWP and the SLBWP, when the UE performs switching between the Uu BWP and the SL BWP, alatency (or delay) time may be generated. Furthermore, in theabove-described example, if requirements of a service that is to betransmitted by the UE requires a very short latency (or delay) time(e.g., 3 ms), due to the latency time required for the BWP switching,the service requirement may not be satisfied. Therefore, a method forresolving the problems caused by the latency time due to the BWPswitching and an apparatus (or device) for supporting the same need tobe proposed.

According to an embodiment of the present disclosure, in order to reducelatency time caused by BWP switching of the UE, the UE may configure anRF bandwidth so that the RF bandwidth can include part or all of the BWPfrom the one or more Uu BWPs and the SL BWP, which are configured in theUE. For example, based on the configurations related to the one or moreUu BWPs and the configuration of the SL BWP received from the basestation, in case the UE configures the one or more Uu BWPs and the SLBWP, the UE may configure an RF bandwidth so that the RF bandwidth caninclude part or all of the BWP from the one or more Uu BWPs and the SLBWP, which are configured in the UE. In this case, the base station mayconfigure a BWP to the UE so that the numerology and/or RRC parameter,and so on, of the one or more Uu BWPs and the SL BWP being configured tothe UE can be aligned.

However, if the UE configures its RF bandwidth so that the RF bandwidthcan include all of the one or more Uu BWPs and the SL BWP, which areconfigured in the UE, unnecessary power waste, and so on, may occur.Therefore, the UE may configure its RF bandwidth so that the RFbandwidth can include part of the BWP from the one or more Uu BWPs andthe SL BWP, which are configured in the UE. As a possible method, incase the base station configures the BWP to the UE, for example, in casethe base station transmits configuration related to the BWP to the UE,additionally, the base station may additionally transmit separateindication or information to the UE. In this case, for example, theindication or information may be indication or information enabling theUE to configure its RF bandwidth by including the corresponding BWP. Forexample, the base station, which transmits the configuration related tothe BWP to the UE, may transmit separate indication or information tothe UE so as to enable the UE to configure its RF bandwidth by includingthe corresponding BWP. For example, the indication or information may beindication or information on a BWP being used for the SL transmission,by the UE, which performs SL transmission based on an indication fromthe base station.

According to an embodiment of the present disclosure, through theseparate indication, the base station may directly configure to the UEwhether or not the corresponding Uu BWP can be activated simultaneouslywith the SL BWP. For example, it will be assumed that the base stationconfigures Uu BWP #1, Uu BWP #2 and SL BWP to the UE. In this case, thebase station may notify to the UE whether or not Uu BWP #1 can beactivated simultaneously with the SL BWP. Additionally, the base stationmay notify to the UE whether or not Uu BWP #2 can be activatedsimultaneously with the SL BWP. More specifically, for example, throughthe indication or information, the base station may indicate orconfigure an active Uu BWP to the UE.

Apart from the above-described explicit method, the base station mayimplicitly notify, to the UE, whether or not the corresponding Uu BWPcan be activated simultaneously with the SL BWP per Uu BWP.

FIG. 12 shows a procedure for configuring an RF bandwidth, by a UE,according to an embodiment of the present disclosure. The embodiment ofFIG. 12 may be combined with other various embodiments of the presentdisclosure.

Referring to FIG. 12, the UE may configure its RF bandwidth so that theRF bandwidth can include only one or more Uu BWPs, whichsatisfy(/satisfies) a predetermined condition based on the one or moreSL BWPs configured in the UE. For example, the UE may configure the RFbandwidth of the UE by including only the Uu BWP being configured of thesame numerology based on the SL BWP.

More specifically, in step S1210, the UE may initiate a procedure forconfiguring its RF bandwidth. In step S1210, the UE may configure j=0.For example, in the embodiment of FIG. 12, it will be assumed that theUE receives configurations related to Uu BWP #0 to Uu BWP #3 from thebase station. Additionally, it will be assumed that the numerology of SLBWP, the numerology of Uu BWP #1, and the numerology of Uu BWP #2 arethe same.

In step S1230, the UE may determine whether or not Uu BWP (j) isconfigured of the same numerology as SL BWP. Currently, since j=0, theUE may determine whether or not the numerology of Uu BWP #0 and thenumerology of SL BWP are the same. In the embodiment of FIG. 12, sincethe numerology of Uu BWP #0 is different from the numerology of SL BWP,the UE may increment the j value by 1. Returning back to step S1230, theUE may determine whether or not Uu BWP (j) is configured of the samenumerology as SL BWP. Currently, since j=1, the UE may determine whetheror not the numerology of Uu BWP #1 and the numerology of SL BWP are thesame. In the embodiment of FIG. 12, since the numerology of Uu BWP #1 isthe same as the numerology of SL BWP, in step S1240, the UE may includeUu BWP #1 in its list.

In step S1250, the UE may determine whether or not all BWP are checked.Since the UE has not yet checked Uu BWP #2 to Uu BWP #4, the UE mayincrement the j value by 1 and may perform step S1230.

If the above-described process is repeated, in step S1260, the UE mayconfigure its RF bandwidth so that the RF bandwidth can include SL BWPand all Uu BWPs included in its list. For example, in the embodiment ofFIG. 12, the UE may configure its RF bandwidth so that the RF bandwidthcan include SL BWP, Uu BWP #1, and Uu BWP #2.

According to an embodiment of the present disclosure, the base stationmay configure one or more Uu BWP and SL BWP to the UE. For example, thenumerology of the Uu BWP and the numerology of the SL BWP may bedifferent. For example, based on the numerology of the Uu BWP beingdifferent from the numerology of the SL BWP, a first device (orapparatus) may not perform SL communication on the SL BWP. And, based onthe numerology of the Uu BWP being different from the numerology of theSL BWP, the SL BWP may be deactivated. For example, the Uu BWP may be anactive UL BWP. For example, the Uu BWP may be an active DL BWP.

For example, based on an interruption time being required between the UuBWP based communication and the SL BWP based communication, the UE maydetermine whether or not to perform SL communication on the SL BWP.Alternatively, for example, based on a switching latency being requiredbetween the Uu BWP based communication and the SL BWP basedcommunication, the UE may determine whether or not to perform SLcommunication on the SL BWP.

For example, in case the interruption time being required between the UuBWP based communication and the SL BWP based communication is equal toor longer than or exceeds a threshold value, the UE may not perform theSL communication on the SL BWP. For example, the UE may suspend the SLcommunication on the SL BWP. For example, the UE may deactivate the SLBWP. Conversely, for example, in case the interruption time beingrequired between the Uu BWP based communication and the SL BWP basedcommunication is equal to or shorter than or less than a thresholdvalue, the UE may perform the SL communication on the SL BWP. Forexample, the threshold value may be configured in advance for the UE.For example, in case the numerology of the Uu BWP and the numerology ofthe SL BWP are different, an interruption time may be generated betweenthe Uu BWP based communication and the SL BWP based communication. Forexample, in case the center frequency of the Uu BWP and the centerfrequency of the SL BWP are different, an interruption time may begenerated between the Uu BWP based communication and the SL BWP basedcommunication. For example, in case the bandwidth of the Uu BWP and thebandwidth of the SL BWP are different, an interruption time may begenerated between the Uu BWP based communication and the SL BWP basedcommunication.

For example, in case the switching latency being required between the UuBWP based communication and the SL BWP based communication is equal toor longer than or exceeds a threshold value, the UE may not perform theSL communication on the SL BWP. For example, the UE may suspend the SLcommunication on the SL BWP. For example, the UE may deactivate the SLBWP. Conversely, for example, in case the switching latency beingrequired between the Uu BWP based communication and the SL BWP basedcommunication is equal to or shorter than or less than a thresholdvalue, the UE may perform the SL communication on the SL BWP. Forexample, the threshold value may be configured in advance for the UE.For example, in case the numerology of the Uu BWP and the numerology ofthe SL BWP are different, a switching latency may be generated betweenthe Uu BWP based communication and the SL BWP based communication. Forexample, in case the center frequency of the Uu BWP and the centerfrequency of the SL BWP are different, a switching latency may begenerated between the Uu BWP based communication and the SL BWP basedcommunication. For example, in case the bandwidth of the Uu BWP and thebandwidth of the SL BWP are different, a switching latency may begenerated between the Uu BWP based communication and the SL BWP basedcommunication.

For example, among the one or more Uu BWPs configured to the UE, the UEmay determine only one or more Uu BWPs in which switching latency to theSL BWP is not required. And, the UE may perform SL communication basedon the Uu BWP in which switching latency to the SL BWP is not required.In other words, in case the base station configures a specific Uu BWP tothe UE, and, in case additional switching latency is required when theUE performs switching between the SL BWP and the specific Uu BWP, the UEmay implicitly assume or determine not to perform SL communication basedon the specific Uu BWP. For example, in case the numerology of the UuBWP and the numerology of the SL BWP are differently configured, whenthe UE performs switching between the Uu BWP and the SL BWP, additionalswitching latency may be required. For example, in case the centerfrequency of the Uu BWP and the center frequency of the SL BWP aredifferently configured, when the UE performs switching between the UuBWP and the SL BWP, additional switching latency may be required. Forexample, in case the bandwidth of the Uu BWP and the bandwidth of the SLBWP are differently configured, when the UE performs switching betweenthe Uu BWP and the SL BWP, additional switching latency may be required.

According to an embodiment of the present disclosure, a BWP may beconfigured for the UE so that an inclusion relation can be establishedbetween one or more BWPs having the need to reduce the switching latencytime. However, in this case, exceptions and/exclusions may be defined.For example, a BWP being configured for broadcasting in a link (e.g., Uulink) between the UE and the base station may be excluded from theaforementioned inclusion relation. For example, a BWP being used duringan initial access process of the UE may be excluded from theaforementioned inclusion relation. In other words, in case of the BWPbeing used during the initial access process of the UE, the BWP may beconfigured, for the UE, to not include the SL BWP. Additionally, in casethe SL BWP and the Uu BWP are configured, for the UE, so as to be in aninclusion relation, between the corresponding BWPs, the UE may configureits RF bandwidth based on a BWP having a larger bandwidth. For example,in case the Uu BWP is configured to include the SL BWP, the UE mayconfigure its RF bandwidth to include the Uu BWP. For example, in casethe SL BWP is configured to include the Uu BWP, the UE may configure itsRF bandwidth to include the SL BWP. In other words, in case the UEperforms switching between BWPs being in an inclusion relation, the UEmay match its RF bandwidth to the BWP having the larger bandwidthbetween the two BWPs. In this case, even if the UE performs switching tothe BWP having the smaller bandwidth, between the two BWPs, the UE maymaintain the configuration for the corresponding RF bandwidth.

According to an embodiment of the present disclosure, the UE may performSL communication while considering the latency caused by BWP switching.For example, in case the UE performing the SL communication reserves aresource pool in which the UE intends to perform communication, byconsidering the latency time consumed for the BWP switching and/or asection (or duration) during which the UE is to be relocated to anotherBWP via BWP switching or a section (or duration) during which the UE ispredicted to be relocated to another BWP via BWP switching, the UE mayexclude the corresponding duration (or section) from its resourcereservation process. For example, in case the UE performs switchingbetween BWPs in an environment having switching latency applied thereto,if the base station configures a Uu BWP requiring switching latency forthe UE, the UE performing switching from the SL BWP to the Uu BWP mayassume or determine that part of the resources within the SL BWP is usedfor the purpose of switching. For example, in case the UE performsswitching between BWPs in an environment having switching latencyapplied thereto, if the base station configures a Uu BWP requiringswitching latency for the UE, the UE performing switching from the SLBWP to the Uu BWP may defined so that part of the resources within theSL BWP cannot be used. For example, in case the UE performs switchingbetween BWPs in an environment having switching latency applied thereto,if the base station configures a Uu BWP requiring switching latency forthe UE, the UE performing switching from the Uu BWP to the SL BWP mayassume or determine that part of the resources within the SL BWP is usedfor the purpose of switching. For example, in case the UE performsswitching between BWPs in an environment having switching latencyapplied thereto, if the base station configures a Uu BWP requiringswitching latency for the UE, the UE performing switching from the UuBWP to the SL BWP may defined so that part of the resources within theSL BWP cannot be used.

According to an embodiment of the present disclosure, through theconfiguration for a resource pool within the BWP being configured forthe SL, the UE may use the resources with more flexibility. For example,the UE may be configured (in advance) with multiple resource pools, andthe UE may perform SL communication by using all or part of thecorresponding multiple resource pools. In this case, the UE may notifythe information on its selected resource pool to another UE or to thebase station. Alternatively, for example, the UE may notify theinformation on the resource pool, which is configured from the basestation, to another UE or to the base station. For example, the resourcepool information may include information on a resource reception pool ofthe UE. For example, the UE may notify information on a resource areaused by the UE itself for monitoring or transmission to another UE or tothe base station. In the above-described operation, in case the UEselects a resource pool, the UE may select a resource pool whileconsidering a BWP for a target UE or an in-coverage/out-of-coverage UEand/or a resource pool configuration.

According to an embodiment of the present disclosure, the UE mayreceive, from the base station, configuration on a resource performingcommunication without any grant from the base station through a Uu link.For example, a configured grant (CG) defined in an NR may be considered.In case of a Configured Grant (CG) Type 2 operation, the base stationmay allocate a resource to the UE via higher layer signaling andphysical layer signaling, and the base station may activate or releasethe CG. Herein, in case the base station configures multiple CGs to theUE, the base station may activate or release the multiple CGs throughone DCI. In this case, in order to differently configure the resourceconfiguration of each CG, a resource allocation related field within theDCI needs to be defined for each of the configured multiple CGs. In thiscase, in order to reduce overhead of the DCI, a total sum of the sizesof the resource configuration fields for the multiple CGs may be fixed,and the size of a field corresponding to the resource configuration ofeach CG within the corresponding fixed total sum of the sizes may bedetermined in correspondence with the number of configured CGs. In otherwords, according to the configured number of CGs, resource configurationgranularity for each CG may be differently applied.

According to an embodiment of the present disclosure, the latency timeconsumed for the BWP switching of the UE may be reduced. Additionally,the influence caused by the BWP switching on the Uu link-basedcommunication or the SL-based communication may be reduced.Additionally, the UE may use resources for communication moreefficiently.

FIG. 13 shows a method for performing wireless communication, by a firstdevice (or apparatus), according to an embodiment of the presentdisclosure. The embodiment of FIG. 13 may be combined with other variousembodiments of the present disclosure.

Referring to FIG. 13, in step S1310, the first device (or apparatus) mayreceive a configuration related to a Uu bandwidth part (BWP) from a basestation. For example, the Uu BWP may be an active BWP. For example, theactive BWP may be an active uplink BWP. For example, the active BWP maybe an active downlink BWP. For example, a configuration related to theUu BWP may include at least one of a numerology related to the Uu BWP, acenter frequency related to the Uu BWP, or a bandwidth related to the UuBWP. For example, the Uu BWP may be at least one of a BWP related to anuplink communication and a BWP related to a downlink communication beingconfigured for the first device (or apparatus).

In step S1320, the first device (or apparatus) may receive aconfiguration related to a sidelink (SL) BWP from the base station. Forexample, a configuration related to the SL BWP may include at least oneof a numerology related to the SL BWP, a center frequency related to theSL BWP, or a bandwidth related to the SL BWP. For example, the SL BWPmay be a BWP related to SL communication being configured for the firstdevice (or apparatus).

For example, a numerology of the Uu BWP and a numerology of the SL BWPmay be different. For example, based on the numerology of the Uu BWP andthe numerology of the SL BWP being different, the first device (orapparatus) may not perform SL communication on the SL BWP. For example,the numerology may include at least one of subcarrier spacing and cyclicprefix (CP). For example, the subcarrier spacing may be one of 15 kHz,30 kHz, 60 kHz, 120 kHz, and 240 kHz. For example, the cyclic prefix(CP) may be one of a normal cyclic prefix (CP) and an extended cyclicprefix (CP). For example, based on the numerology of the Uu BWP and thenumerology of the SL BWP being different, the SL BWP may be deactivated.

For example, based on the numerology of the Uu BWP and the numerology ofthe SL BWP being different, the first device (or apparatus) may notperform Uu BWP-based SL communication on the SL BWP. For example, the UuBWP-based SL communication may be SL communication performed by thefirst device (or apparatus) on the SL BWP based on Downlink ControlInformation (DCI) received, by the first device (or apparatus), from thebase station on the Uu BWP.

For example, based on an interruption time being required between the UuBWP-based communication and the SL BWP-based communication, the firstdevice (or apparatus) may not perform SL communication on the SL BWP.

According to an embodiment of the present disclosure, a first device (orapparatus) for performing wireless communication may be provided. Forexample, the first device (or apparatus) may include one or morememories storing instructions, one or more transceivers, and one or moreprocessors connected to the one or more memories and the one or moretransceivers. For example, the one or more processors may execute theinstructions to receive a configuration related to a Uu bandwidth part(BWP) from a base station, and to receive a configuration related to asidelink (SL) BWP from the base station. Herein, based on the numerologyof the Uu BWP and the numerology of the SL BWP being different, thefirst device (or apparatus) may not perform SL communication on the SLBWP.

According to an embodiment of the present disclosure, a device (orapparatus) configured to control a first user equipment (UE) may beprovided. For example, the device (or apparatus) may include one or moreprocessors, and one or more memories being operably connectable to theone or more processors and storing instructions. For example, the one ormore processors may execute the instructions to receive a configurationrelated to a Uu bandwidth part (BWP) from a base station, and to receivea configuration related to a sidelink (SL) BWP from the base station.Herein, based on a numerology of the Uu BWP and a numerology of the SLBWP being different, the first UE may not perform SL communication onthe SL BWP.

According to an embodiment of the present disclosure, a non-transitorycomputer-readable medium having instructions recorded thereon may beprovided. For example, when enacted by one or more processors, theinstructions may cause the one or more processors to receive, by a firstdevice (or apparatus), a configuration related to a Uu bandwidth part(BWP) from a base station, and receive, by the first device (orapparatus), a configuration related to a sidelink (SL) BWP from the basestation. Herein, based on the numerology of the Uu BWP and thenumerology of the SL BWP being different, the first device (orapparatus) may not perform SL communication on the SL BWP.

FIG. 14 shows a method for performing wireless communication, by a firstdevice (or apparatus), according to an embodiment of the presentdisclosure. The embodiment of FIG. 14 may be combined with other variousembodiments of the present disclosure.

Referring to FIG. 14, in step S1410, the first device (or apparatus) mayreceive a configuration related to a Uu bandwidth part (BWP) from a basestation. For example, the Uu BWP may be an active BWP. For example, theactive BWP may be an active uplink BWP. For example, the active BWP maybe an active downlink BWP. For example, a configuration related to theUu BWP may include at least one of a numerology related to the Uu BWP, acenter frequency related to the Uu BWP, or a bandwidth related to the UuBWP. For example, the Uu BWP may be at least one of a BWP related to anuplink communication and a BWP related to a downlink communication beingconfigured for the first device (or apparatus).

In step S140, the first device (or apparatus) may receive aconfiguration related to a sidelink (SL) BWP from the base station. Forexample, a configuration related to the SL BWP may include at least oneof a numerology related to the SL BWP, a center frequency related to theSL BWP, or a bandwidth related to the SL BWP. For example, the SL BWPmay be a BWP related to SL communication being configured for the firstdevice (or apparatus). For example, a numerology of the Uu BWP and anumerology of the SL BWP may be the same.

In step S1430, based on the numerology of the Uu BWP and the numerologyof the SL BWP being the same, the first device (or apparatus) mayperform SL communication on the SL BWP. As described above, if thenumerology of the Uu BWP and the numerology of the SL BWP are different,the first device (or apparatus) may not perform SL communication on theSL BWP.

The various embodiments of the present disclosure may be applied notonly in vehicle-to-vehicle communication, but also tovehicle-to-pedestrian communication, vehicle-to-base stationcommunication or vehicle-to-fixed node communication. For example, inthe communication with a base station, a location and speed (or rate) ofan opposite party receiver may be considered as being fixed.

Hereinafter, an apparatus to which various embodiments of the presentdisclosure can be applied will be described.

The various descriptions, functions, procedures, proposals, methods,and/or operational flowcharts of the present disclosure described inthis document may be applied to, without being limited to, a variety offields requiring wireless communication/connection (e.g., 5G) betweendevices.

Hereinafter, a description will be given in more detail with referenceto the drawings. In the following drawings/description, the samereference symbols may denote the same or corresponding hardware blocks,software blocks, or functional blocks unless described otherwise.

FIG. 15 shows a communication system 1, in accordance with an embodimentof the present disclosure.

Referring to FIG. 15, a communication system 1 to which variousembodiments of the present disclosure are applied includes wirelessdevices, Base Stations (BSs), and a network. Herein, the wirelessdevices represent devices performing communication using Radio AccessTechnology (RAT) (e.g., 5G New RAT (NR)) or Long-Term Evolution (LTE))and may be referred to as communication/radio/5G devices. The wirelessdevices may include, without being limited to, a robot 100 a, vehicles100 b-1 and 100 b-2, an eXtended Reality (XR) device 100 c, a hand-helddevice 100 d, a home appliance 100 e, an Internet of Things (IoT) device100 f, and an Artificial Intelligence (AI) device/server 400. Forexample, the vehicles may include a vehicle having a wirelesscommunication function, an autonomous vehicle, and a vehicle capable ofperforming communication between vehicles. Herein, the vehicles mayinclude an Unmanned Aerial Vehicle (UAV) (e.g., a drone). The XR devicemay include an Augmented Reality (AR)/Virtual Reality (VR)/Mixed Reality(MR) device and may be implemented in the form of a Head-Mounted Device(HMD), a Head-Up Display (HUD) mounted in a vehicle, a television, asmartphone, a computer, a wearable device, a home appliance device, adigital signage, a vehicle, a robot, etc. The hand-held device mayinclude a smartphone, a smartpad, a wearable device (e.g., a smartwatchor a smartglasses), and a computer (e.g., a notebook). The homeappliance may include a TV, a refrigerator, and a washing machine. TheIoT device may include a sensor and a smartmeter. For example, the BSsand the network may be implemented as wireless devices and a specificwireless device 200 a may operate as a BS/network node with respect toother wireless devices.

The wireless devices 100 a to 100 f may be connected to the network 300via the BSs 200. An AI technology may be applied to the wireless devices100 a to 100 f and the wireless devices 100 a to 100 f may be connectedto the AI server 400 via the network 300. The network 300 may beconfigured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g.,NR) network. Although the wireless devices 100 a to 100 f maycommunicate with each other through the BSs 200/network 300, thewireless devices 100 a to 100 f may perform direct communication (e.g.,sidelink communication) with each other without passing through theBSs/network. For example, the vehicles 100 b-1 and 100 b-2 may performdirect communication (e.g. Vehicle-to-Vehicle(V2V)/Vehicle-to-everything (V2X) communication). The IoT device (e.g.,a sensor) may perform direct communication with other IoT devices (e.g.,sensors) or other wireless devices 100 a to 100 f.

Wireless communication/connections 150 a, 150 b, or 150 c may beestablished between the wireless devices 100 a to 100 f/BS 200, or BS200/BS 200. Herein, the wireless communication/connections may beestablished through various RATs (e.g., 5G NR) such as uplink/downlinkcommunication 150 a, sidelink communication 150 b (or, D2Dcommunication), or inter BS communication(e.g. relay, Integrated AccessBackhaul(IAB)). The wireless devices and the BSs/the wireless devicesmay transmit/receive radio signals to/from each other through thewireless communication/connections 150 a and 150 b. For example, thewireless communication/connections 150 a and 150 b may transmit/receivesignals through various physical channels. To this end, at least a partof various configuration information configuring processes, varioussignal processing processes (e.g., channel encoding/decoding,modulation/demodulation, and resource mapping/demapping), and resourceallocating processes, for transmitting/receiving radio signals, may beperformed based on the various proposals of the present disclosure.

FIG. 16 shows wireless devices, in accordance with an embodiment of thepresent disclosure.

Referring to FIG. 16, a first wireless device 100 and a second wirelessdevice 200 may transmit radio signals through a variety of RATs (e.g.,LTE and NR). Herein, {the first wireless device 100 and the secondwireless device 200} may correspond to {the wireless device 100 x andthe BS 200} and/or {the wireless device 100 x and the wireless device100 x} of FIG. 15.

The first wireless device 100 may include one or more processors 102 andone or more memories 104 and additionally further include one or moretransceivers 106 and/or one or more antennas 108. The processor(s) 102may control the memory(s) 104 and/or the transceiver(s) 106 and may beconfigured to implement the descriptions, functions, procedures,proposals, methods, and/or operational flowcharts disclosed in thisdocument. For example, the processor(s) 102 may process informationwithin the memory(s) 104 to generate first information/signals and thentransmit radio signals including the first information/signals throughthe transceiver(s) 106. The processor(s) 102 may receive radio signalsincluding second information/signals through the transceiver 106 andthen store information obtained by processing the secondinformation/signals in the memory(s) 104. The memory(s) 104 may beconnected to the processor(s) 102 and may store a variety of informationrelated to operations of the processor(s) 102. For example, thememory(s) 104 may store software code including commands for performinga part or the entirety of processes controlled by the processor(s) 102or for performing the descriptions, functions, procedures, proposals,methods, and/or operational flowcharts disclosed in this document.Herein, the processor(s) 102 and the memory(s) 104 may be a part of acommunication modem/circuit/chip designed to implement RAT (e.g., LTE orNR). The transceiver(s) 106 may be connected to the processor(s) 102 andtransmit and/or receive radio signals through one or more antennas 108.Each of the transceiver(s) 106 may include a transmitter and/or areceiver. The transceiver(s) 106 may be interchangeably used with RadioFrequency (RF) unit(s). In the present disclosure, the wireless devicemay represent a communication modem/circuit/chip.

The second wireless device 200 may include one or more processors 202and one or more memories 204 and additionally further include one ormore transceivers 206 and/or one or more antennas 208. The processor(s)202 may control the memory(s) 204 and/or the transceiver(s) 206 and maybe configured to implement the descriptions, functions, procedures,proposals, methods, and/or operational flowcharts disclosed in thisdocument. For example, the processor(s) 202 may process informationwithin the memory(s) 204 to generate third information/signals and thentransmit radio signals including the third information/signals throughthe transceiver(s) 206. The processor(s) 202 may receive radio signalsincluding fourth information/signals through the transceiver(s) 106 andthen store information obtained by processing the fourthinformation/signals in the memory(s) 204. The memory(s) 204 may beconnected to the processor(s) 202 and may store a variety of informationrelated to operations of the processor(s) 202. For example, thememory(s) 204 may store software code including commands for performinga part or the entirety of processes controlled by the processor(s) 202or for performing the descriptions, functions, procedures, proposals,methods, and/or operational flowcharts disclosed in this document.Herein, the processor(s) 202 and the memory(s) 204 may be a part of acommunication modem/circuit/chip designed to implement RAT (e.g., LTE orNR). The transceiver(s) 206 may be connected to the processor(s) 202 andtransmit and/or receive radio signals through one or more antennas 208.Each of the transceiver(s) 206 may include a transmitter and/or areceiver. The transceiver(s) 206 may be interchangeably used with RFunit(s). In the present disclosure, the wireless device may represent acommunication modem/circuit/chip.

Hereinafter, hardware elements of the wireless devices 100 and 200 willbe described more specifically. One or more protocol layers may beimplemented by, without being limited to, one or more processors 102 and202. For example, the one or more processors 102 and 202 may implementone or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP,RRC, and SDAP). The one or more processors 102 and 202 may generate oneor more Protocol Data Units (PDUs) and/or one or more Service Data Unit(SDUs) according to the descriptions, functions, procedures, proposals,methods, and/or operational flowcharts disclosed in this document. Theone or more processors 102 and 202 may generate messages, controlinformation, data, or information according to the descriptions,functions, procedures, proposals, methods, and/or operational flowchartsdisclosed in this document. The one or more processors 102 and 202 maygenerate signals (e.g., baseband signals) including PDUs, SDUs,messages, control information, data, or information according to thedescriptions, functions, procedures, proposals, methods, and/oroperational flowcharts disclosed in this document and provide thegenerated signals to the one or more transceivers 106 and 206. The oneor more processors 102 and 202 may receive the signals (e.g., basebandsignals) from the one or more transceivers 106 and 206 and acquire thePDUs, SDUs, messages, control information, data, or informationaccording to the descriptions, functions, procedures, proposals,methods, and/or operational flowcharts disclosed in this document.

The one or more processors 102 and 202 may be referred to ascontrollers, microcontrollers, microprocessors, or microcomputers. Theone or more processors 102 and 202 may be implemented by hardware,firmware, software, or a combination thereof. As an example, one or moreApplication Specific Integrated Circuits (ASICs), one or more DigitalSignal Processors (DSPs), one or more Digital Signal Processing Devices(DSPDs), one or more Programmable Logic Devices (PLDs), or one or moreField Programmable Gate Arrays (FPGAs) may be included in the one ormore processors 102 and 202. The descriptions, functions, procedures,proposals, methods, and/or operational flowcharts disclosed in thisdocument may be implemented using firmware or software and the firmwareor software may be configured to include the modules, procedures, orfunctions. Firmware or software configured to perform the descriptions,functions, procedures, proposals, methods, and/or operational flowchartsdisclosed in this document may be included in the one or more processors102 and 202 or stored in the one or more memories 104 and 204 so as tobe driven by the one or more processors 102 and 202. The descriptions,functions, procedures, proposals, methods, and/or operational flowchartsdisclosed in this document may be implemented using firmware or softwarein the form of code, commands, and/or a set of commands.

The one or more memories 104 and 204 may be connected to the one or moreprocessors 102 and 202 and store various types of data, signals,messages, information, programs, code, instructions, and/or commands.The one or more memories 104 and 204 may be configured by Read-OnlyMemories (ROMs), Random Access Memories (RAMs), Electrically ErasableProgrammable Read-Only Memories (EPROMs), flash memories, hard drives,registers, cash memories, computer-readable storage media, and/orcombinations thereof. The one or more memories 104 and 204 may belocated at the interior and/or exterior of the one or more processors102 and 202. The one or more memories 104 and 204 may be connected tothe one or more processors 102 and 202 through various technologies suchas wired or wireless connection.

The one or more transceivers 106 and 206 may transmit user data, controlinformation, and/or radio signals/channels, mentioned in the methodsand/or operational flowcharts of this document, to one or more otherdevices. The one or more transceivers 106 and 206 may receive user data,control information, and/or radio signals/channels, mentioned in thedescriptions, functions, procedures, proposals, methods, and/oroperational flowcharts disclosed in this document, from one or moreother devices. For example, the one or more transceivers 106 and 206 maybe connected to the one or more processors 102 and 202 and transmit andreceive radio signals. For example, the one or more processors 102 and202 may perform control so that the one or more transceivers 106 and 206may transmit user data, control information, or radio signals to one ormore other devices. The one or more processors 102 and 202 may performcontrol so that the one or more transceivers 106 and 206 may receiveuser data, control information, or radio signals from one or more otherdevices. The one or more transceivers 106 and 206 may be connected tothe one or more antennas 108 and 208 and the one or more transceivers106 and 206 may be configured to transmit and receive user data, controlinformation, and/or radio signals/channels, mentioned in thedescriptions, functions, procedures, proposals, methods, and/oroperational flowcharts disclosed in this document, through the one ormore antennas 108 and 208. In this document, the one or more antennasmay be a plurality of physical antennas or a plurality of logicalantennas (e.g., antenna ports). The one or more transceivers 106 and 206may convert received radio signals/channels etc. from RF band signalsinto baseband signals in order to process received user data, controlinformation, radio signals/channels, etc. using the one or moreprocessors 102 and 202. The one or more transceivers 106 and 206 mayconvert the user data, control information, radio signals/channels, etc.processed using the one or more processors 102 and 202 from the baseband signals into the RF band signals. To this end, the one or moretransceivers 106 and 206 may include (analog) oscillators and/orfilters.

FIG. 17 shows a signal process circuit for a transmission signal, inaccordance with an embodiment of the present disclosure.

Referring to FIG. 17, a signal processing circuit 1000 may includescramblers 1010, modulators 1020, a layer mapper 1030, a precoder 1040,resource mappers 1050, and signal generators 1060. An operation/functionof FIG. 17 may be performed, without being limited to, the processors102 and 202 and/or the transceivers 106 and 206 of FIG. 16. Hardwareelements of FIG. 17 may be implemented by the processors 102 and 202and/or the transceivers 106 and 206 of FIG. 16. For example, blocks 1010to 1060 may be implemented by the processors 102 and 202 of FIG. 16.Alternatively, the blocks 1010 to 1050 may be implemented by theprocessors 102 and 202 of FIG. 16 and the block 1060 may be implementedby the transceivers 106 and 206 of FIG. 16.

Codewords may be converted into radio signals via the signal processingcircuit 1000 of FIG. 17. Herein, the codewords are encoded bit sequencesof information blocks. The information blocks may include transportblocks (e.g., a UL-SCH transport block, a DL-SCH transport block). Theradio signals may be transmitted through various physical channels(e.g., a PUSCH and a PDSCH).

Specifically, the codewords may be converted into scrambled bitsequences by the scramblers 1010. Scramble sequences used for scramblingmay be generated based on an initialization value, and theinitialization value may include ID information of a wireless device.The scrambled bit sequences may be modulated to modulation symbolsequences by the modulators 1020. A modulation scheme may includepi/2-Binary Phase Shift Keying (pi/2-BPSK), m-Phase Shift Keying(m-PSK), and m-Quadrature Amplitude Modulation (m-QAM). Complexmodulation symbol sequences may be mapped to one or more transportlayers by the layer mapper 1030. Modulation symbols of each transportlayer may be mapped (precoded) to corresponding antenna port(s) by theprecoder 1040. Outputs z of the precoder 1040 may be obtained bymultiplying outputs y of the layer mapper 1030 by an N*M precodingmatrix W. Herein, N is the number of antenna ports and M is the numberof transport layers. The precoder 1040 may perform precoding afterperforming transform precoding (e.g., DFT) for complex modulationsymbols. Alternatively, the precoder 1040 may perform precoding withoutperforming transform precoding.

The resource mappers 1050 may map modulation symbols of each antennaport to time-frequency resources. The time-frequency resources mayinclude a plurality of symbols (e.g., a CP-OFDMA symbols and DFT-s-OFDMAsymbols) in the time domain and a plurality of subcarriers in thefrequency domain. The signal generators 1060 may generate radio signalsfrom the mapped modulation symbols and the generated radio signals maybe transmitted to other devices through each antenna. For this purpose,the signal generators 1060 may include Inverse Fast Fourier Transform(IFFT) modules, Cyclic Prefix (CP) inserters, Digital-to-AnalogConverters (DACs), and frequency up-converters.

Signal processing procedures for a signal received in the wirelessdevice may be configured in a reverse manner of the signal processingprocedures 1010 to 1060 of FIG. 17. For example, the wireless devices(e.g., 100 and 200 of FIG. 16) may receive radio signals from theexterior through the antenna ports/transceivers. The received radiosignals may be converted into baseband signals through signal restorers.To this end, the signal restorers may include frequency downlinkconverters, Analog-to-Digital Converters (ADCs), CP remover, and FastFourier Transform (FFT) modules. Next, the baseband signals may berestored to codewords through a resource demapping procedure, apostcoding procedure, a demodulation processor, and a descramblingprocedure. The codewords may be restored to original information blocksthrough decoding. Therefore, a signal processing circuit (notillustrated) for a reception signal may include signal restorers,resource demappers, a postcoder, demodulators, descramblers, anddecoders.

FIG. 18 shows another example of a wireless device, in accordance withan embodiment of the present disclosure. The wireless device may beimplemented in various forms according to a use-case/service (refer toFIG. 15).

Referring to FIG. 18, wireless devices 100 and 200 may correspond to thewireless devices 100 and 200 of FIG. 16 and may be configured by variouselements, components, units/portions, and/or modules. For example, eachof the wireless devices 100 and 200 may include a communication unit110, a control unit 120, a memory unit 130, and additional components140. The communication unit may include a communication circuit 112 andtransceiver(s) 114. For example, the communication circuit 112 mayinclude the one or more processors 102 and 202 and/or the one or morememories 104 and 204 of FIG. 16. For example, the transceiver(s) 114 mayinclude the one or more transceivers 106 and 206 and/or the one or moreantennas 108 and 208 of FIG. 16. The control unit 120 is electricallyconnected to the communication unit 110, the memory 130, and theadditional components 140 and controls overall operation of the wirelessdevices. For example, the control unit 120 may control anelectric/mechanical operation of the wireless device based onprograms/code/commands/information stored in the memory unit 130. Thecontrol unit 120 may transmit the information stored in the memory unit130 to the exterior (e.g., other communication devices) via thecommunication unit 110 through a wireless/wired interface or store, inthe memory unit 130, information received through the wireless/wiredinterface from the exterior (e.g., other communication devices) via thecommunication unit 110.

The additional components 140 may be variously configured according totypes of wireless devices. For example, the additional components 140may include at least one of a power unit/battery, input/output (I/O)unit, a driving unit, and a computing unit. The wireless device may beimplemented in the form of, without being limited to, the robot (100 aof FIG. 15), the vehicles (100 b-1 and 100 b-2 of FIG. 15), the XRdevice (100 c of FIG. 15), the hand-held device (100 d of FIG. 15), thehome appliance (100 e of FIG. 15), the IoT device (100 f of FIG. 15), adigital broadcast terminal, a hologram device, a public safety device,an MTC device, a medicine device, a fintech device (or a financedevice), a security device, a climate/environment device, the AIserver/device (400 of FIG. 15), the BSs (200 of FIG. 15), a networknode, etc. The wireless device may be used in a mobile or fixed placeaccording to a use-example/service.

In FIG. 18, the entirety of the various elements, components,units/portions, and/or modules in the wireless devices 100 and 200 maybe connected to each other through a wired interface or at least a partthereof may be wirelessly connected through the communication unit 110.For example, in each of the wireless devices 100 and 200, the controlunit 120 and the communication unit 110 may be connected by wire and thecontrol unit 120 and first units (e.g., 130 and 140) may be wirelesslyconnected through the communication unit 110. Each element, component,unit/portion, and/or module within the wireless devices 100 and 200 mayfurther include one or more elements. For example, the control unit 120may be configured by a set of one or more processors. As an example, thecontrol unit 120 may be configured by a set of a communication controlprocessor, an application processor, an Electronic Control Unit (ECU), agraphical processing unit, and a memory control processor. As anotherexample, the memory 130 may be configured by a Random Access Memory(RAM), a Dynamic RAM (DRAM), a Read Only Memory (ROM)), a flash memory,a volatile memory, a non-volatile memory, and/or a combination thereof.

Hereinafter, an example of implementing FIG. 18 will be described indetail with reference to the drawings.

FIG. 19 shows a hand-held device, in accordance with an embodiment ofthe present disclosure. The hand-held device may include a smartphone, asmartpad, a wearable device (e.g., a smartwatch or a smartglasses), or aportable computer (e.g., a notebook). The hand-held device may bereferred to as a mobile station (MS), a user terminal (UT), a MobileSubscriber Station (MSS), a Subscriber Station (SS), an Advanced MobileStation (AMS), or a Wireless Terminal (WT).

Referring to FIG. 19, a hand-held device 100 may include an antenna unit108, a communication unit 110, a control unit 120, a memory unit 130, apower supply unit 140 a, an interface unit 140 b, and an I/O unit 140 c.The antenna unit 108 may be configured as a part of the communicationunit 110. Blocks 110 to 130/140 a to 140 c correspond to the blocks 110to 130/140 of FIG. 18, respectively.

The communication unit 110 may transmit and receive signals (e.g., dataand control signals) to and from other wireless devices or BSs. Thecontrol unit 120 may perform various operations by controllingconstituent elements of the hand-held device 100. The control unit 120may include an Application Processor (AP). The memory unit 130 may storedata/parameters/programs/code/commands needed to drive the hand-helddevice 100. The memory unit 130 may store input/output data/information.The power supply unit 140 a may supply power to the hand-held device 100and include a wired/wireless charging circuit, a battery, etc. Theinterface unit 140 b may support connection of the hand-held device 100to other external devices. The interface unit 140 b may include variousports (e.g., an audio I/O port and a video I/O port) for connection withexternal devices. The I/O unit 140 c may input or output videoinformation/signals, audio information/signals, data, and/or informationinput by a user. The I/O unit 140 c may include a camera, a microphone,a user input unit, a display unit 140 d, a speaker, and/or a hapticmodule.

As an example, in the case of data communication, the I/O unit 140 c mayacquire information/signals (e.g., touch, text, voice, images, or video)input by a user and the acquired information/signals may be stored inthe memory unit 130. The communication unit 110 may convert theinformation/signals stored in the memory into radio signals and transmitthe converted radio signals to other wireless devices directly or to aBS. The communication unit 110 may receive radio signals from otherwireless devices or the BS and then restore the received radio signalsinto original information/signals. The restored information/signals maybe stored in the memory unit 130 and may be output as various types(e.g., text, voice, images, video, or haptic) through the I/O unit 140c.

FIG. 20 shows a vehicle or an autonomous vehicle, in accordance with anembodiment of the present disclosure. The vehicle or autonomous vehiclemay be implemented by a mobile robot, a car, a train, a manned/unmannedAerial Vehicle (AV), a ship, etc.

Referring to FIG. 20, a vehicle or autonomous vehicle 100 may include anantenna unit 108, a communication unit 110, a control unit 120, adriving unit 140 a, a power supply unit 140 b, a sensor unit 140 c, andan autonomous driving unit 140 d. The antenna unit 108 may be configuredas a part of the communication unit 110. The blocks 110/130/140 a to 140d correspond to the blocks 110/130/140 of FIG. 18, respectively.

The communication unit 110 may transmit and receive signals (e.g., dataand control signals) to and from external devices such as othervehicles, BSs (e.g., gNBs and road side units), and servers. The controlunit 120 may perform various operations by controlling elements of thevehicle or the autonomous vehicle 100. The control unit 120 may includean Electronic Control Unit (ECU). The driving unit 140 a may cause thevehicle or the autonomous vehicle 100 to drive on a road. The drivingunit 140 a may include an engine, a motor, a powertrain, a wheel, abrake, a steering device, etc. The power supply unit 140 b may supplypower to the vehicle or the autonomous vehicle 100 and include awired/wireless charging circuit, a battery, etc. The sensor unit 140 cmay acquire a vehicle state, ambient environment information, userinformation, etc. The sensor unit 140 c may include an InertialMeasurement Unit (IMU) sensor, a collision sensor, a wheel sensor, aspeed sensor, a slope sensor, a weight sensor, a heading sensor, aposition module, a vehicle forward/backward sensor, a battery sensor, afuel sensor, a tire sensor, a steering sensor, a temperature sensor, ahumidity sensor, an ultrasonic sensor, an illumination sensor, a pedalposition sensor, etc. The autonomous driving unit 140 d may implementtechnology for maintaining a lane on which a vehicle is driving,technology for automatically adjusting speed, such as adaptive cruisecontrol, technology for autonomously driving along a determined path,technology for driving by automatically setting a path if a destinationis set, and the like.

For example, the communication unit 110 may receive map data, trafficinformation data, etc. from an external server. The autonomous drivingunit 140 d may generate an autonomous driving path and a driving planfrom the obtained data. The control unit 120 may control the drivingunit 140 a such that the vehicle or the autonomous vehicle 100 may movealong the autonomous driving path according to the driving plan (e.g.,speed/direction control). In the middle of autonomous driving, thecommunication unit 110 may aperiodically/periodically acquire recenttraffic information data from the external server and acquiresurrounding traffic information data from neighboring vehicles. In themiddle of autonomous driving, the sensor unit 140 c may obtain a vehiclestate and/or surrounding environment information. The autonomous drivingunit 140 d may update the autonomous driving path and the driving planbased on the newly obtained data/information. The communication unit 110may transfer information about a vehicle position, the autonomousdriving path, and/or the driving plan to the external server. Theexternal server may predict traffic information data using AItechnology, etc., based on the information collected from vehicles orautonomous vehicles and provide the predicted traffic information datato the vehicles or the autonomous vehicles.

Claims in the present description can be combined in a various way. Forinstance, technical features in method claims of the present descriptioncan be combined to be implemented or performed in an apparatus, andtechnical features in apparatus claims can be combined to be implementedor performed in a method. Further, technical features in method claim(s)and apparatus claim(s) can be combined to be implemented or performed inan apparatus. Further, technical features in method claim(s) andapparatus claim(s) can be combined to be implemented or performed in amethod.

What is claimed is:
 1. A method for performing wireless communication bya first apparatus, the method comprising: receiving a configurationrelated to a Uu bandwidth part (BWP) from a base station; and receivinga configuration related to a sidelink (SL) BWP from the base station,wherein, based on a numerology of the Uu BWP and a numerology of the SLBWP being different, the first apparatus does not perform SLcommunication on the SL BWP.
 2. The method of claim 1, wherein thenumerology includes at least one of subcarrier spacing and cyclic prefix(CP).
 3. The method of claim 2, wherein the subcarrier spacing is one of15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz.
 4. The method of claim 2,wherein the cyclic prefix (CP) is one of a normal cyclic prefix (CP) andan extended cyclic prefix (CP).
 5. The method of claim 1, wherein, basedon a numerology of the Uu BWP and a numerology of the SL BWP beingdifferent, the SL BWP is deactivated.
 6. The method of claim 5, whereinthe Uu BWP is an active BWP.
 7. The method of claim 6, wherein theactive BWP is an active uplink BWP or an active downlink BWP.
 8. Themethod of claim 1, wherein, based on a numerology of the Uu BWP and anumerology of the SL BWP being different, the first apparatus does notperform Uu BWP-based SL communication on the SL BWP.
 9. The method ofclaim 8, wherein the Uu BWP-based SL communication is SL communicationperformed by the first apparatus on the SL BWP based on Downlink ControlInformation (DCI) received, by the first apparatus, from the basestation on the Uu BWP.
 10. The method of claim 1, wherein, based on aninterruption time being required between the Uu BWP-based communicationand the SL BWP-based communication, the first apparatus does not performSL communication on the SL BWP.
 11. The method of claim 1, wherein aconfiguration related to the Uu BWP includes at least one of anumerology related to the Uu BWP, a center frequency related to the UuBWP, or a bandwidth related to the Uu BWP, and wherein a configurationrelated to the SL BWP includes at least one of a numerology related tothe SL BWP, a center frequency related to the SL BWP, or a bandwidthrelated to the SL BWP.
 12. The method of claim 1, wherein the SL BWP isa BWP related to SL communication being configured for the firstapparatus, and wherein the Uu BWP is at least one of a BWP related to anuplink communication and a BWP related to a downlink communication beingconfigured for the first apparatus.
 13. A first apparatus for performingwireless communication, the first apparatus comprising: one or morememories storing instructions; one or more transceivers; and one or moreprocessors connected to the one or more memories and the one or moretransceivers, wherein the one or more processors execute theinstructions to: receive a configuration related to a Uu bandwidth part(BWP) from a base station, and receive a configuration related to asidelink (SL) BWP from the base station, wherein, based on a numerologyof the Uu BWP and a numerology of the SL BWP being different, the firstapparatus does not perform SL communication on the SL BWP.
 14. A methodfor performing wireless communication by a first apparatus, the methodcomprising: receiving a configuration related to a Uu bandwidth part(BWP) from a base station; and receiving a configuration related to asidelink (SL) BWP from the base station; and based on a numerology ofthe Uu BWP and a numerology of the SL BWP being the same, performing SLcommunication on the SL BWP.
 15. The method of claim 14, wherein the UuBWP is an active BWP.